Preparation and stabilization of gold nanoparticles formed by in situ reduction of aqueous chloroaurate ions within surface-modified mesoporous silica

被引：97

作者：

Ghosh, A

Patra, CR

Mukherjee, P

Sastry, M ^{[1
]}

Kumar, R

机构：

[1] Natl Chem Lab, Catalysis Div, Pune 411008, Maharashtra, India

[2] Natl Chem Lab, Mat Chem Div, Pune 411008, Maharashtra, India

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2003年 / 58卷 / 03期

关键词：

auto-reduction; gold nanoparticle; MCM-41; organo-functionalized mesoporous silica; organo-inorganic nanocomposite;

D O I：

10.1016/S1387-1811(02)00626-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A convenient method for the synthesis and simultaneous stabilization of gold nanoparticles in organo-functionalized MCM-41 is described. The silanol groups present on the surface of the mesoporous matrix reduce aqueous chloroaurate ions, resulting in the formation of gold nanoparticles, which are subsequently anchored to the host matrix via organic functionality. The method, in which propylamine-MCM-41 or propylthiol-MCM-41 is treated with a dilute aqueous solution of HAuCl4 at ambient conditions, is quite simple and environmentally benign as there is no need to add any external reducing agent. The nano-Au-MCM-41 hybrid materials were characterized by XRD, UV-Vis, TEM, XPS, EDX and N-2 adsorption measurements. (C) 2002 Elsevier Science Inc. All rights reserved.

引用

页码：201 / 211

页数：11

共 34 条

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